Question: Name the tributary of Bay Bengal for which the river source is Chembarambakkam Lake.
Paraphrase: Title the tributary of Cove Bengal for which the waterway source is Chembarambakkam Lake.
SPARQL (Wikidata): SELECT ?answer WHERE { wd:Q38684 wdt:P974 ?answer . ?answer wdt:P885 wd:Q3524627}
Answer: Adyar River